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| 不同水位下钢板桩围堰工作性状有限元分析 | |
| 引用本文： | 崔春义,黄建,孙占琦,魏超,聂淼鑫.不同水位下钢板桩围堰工作性状有限元分析[J].广西大学学报(自然科学版),2010,35(1). |
| 作者姓名： | 崔春义 黄建 孙占琦 魏超 聂淼鑫 |
| 作者单位： | 1. 大连海事大学道路与桥梁工程研究所,辽宁,大连,116026 2. 大连理工大学岩土工程研究所,辽宁,大连,116024 3. 深圳市市政设计研究院有限公司博士后创新基地,广东,深圳,518029 4. 浙江工贸职业技术学院,浙江,温州,325003 |
| 基金项目： | 国家自然科学青年科学基金资助项目(50809009);;建设部科学技术项目计划(2008-K2-39) |
| 摘 要： | 为探讨钢板桩围堰体系工作特性,通过建立双排钢板桩围堰体系弹塑性有限元数值模型,采用基于Mohr-Coulomb破坏准则的理想弹塑性本构模型考虑土石物的弹塑性性质,采用罚函数接触算法描述界面接触特性,针对不同水位下钢板桩围堰在加载过程中呈现的受力变形特征进行了分析与讨论。计算分析表明:在高水位时外侧钢板桩承受被动土压力,而在低水位时外侧钢板桩承受主动土压力。在极端高、低水位情况下,围堰土石体系均在拉杆内侧端部附近区域存在明显的塑性区,在极端低水位下拉杆外侧端部土石体系附近区域也存在明显塑性区。围堰外水位越低,围堰外侧钢板桩承受的主动土压力越大,外侧钢板桩的正向侧向变形亦越明显,拉杆和钢板桩强度特性发挥的越充分。因此,随着围堰外水位标高增加,拉杆截面正应力变化率呈现逐渐衰减变化特征。 |
| 关 键 词： | 钢板桩 围堰 有限元法 不同水位 |
FEM analysis of working performance of a cofferdam system with steel sheet piles under different water heights |
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| CUI Chun-yi,HUANG Jian,SUN Zhan-qi,WEI Chao,NIE Miao-xin.FEM analysis of working performance of a cofferdam system with steel sheet piles under different water heights[J].Journal of Guangxi University(Natural Science Edition),2010,35(1). | |
| Authors: | CUI Chun-yi HUANG Jian SUN Zhan-qi WEI Chao NIE Miao-xin |
| Institution: | 1. Institute of Road and Bridge Engineering;Dalian Maritime University;Dalian 116026;China;2. Institute of Geotechincal Engineering;Dalian University of Technology;3. Postdoctoral Contribution and Practice Center;Shenzhen Municipal Engineering Design Institute;Shenzhen 518029;4. Zhejiang Industry & Trade Polytechnic;Wenzhou 325003;China. |
| Abstract: | Aiming at discussing the working performance of cofferdam system with steel sheet piles, nonlinear numerical computation is conducted in the present work by developing elasto-plastic FE model in plane stress state,employing Mohr-Coulomb yield criterion to describe the elaso-plasticity of subsoil and Coulomb contact pair theory with penalty algorithm to simulate the discontinuous contact behavior between foundation and soil,as well as using infinite element in model boundaries to avoid static boundary effect... |
| Keywords: | steel sheet pile cofferdam finite element method different water height |
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